Application of a Bonner sphere spectrometer for determination of the energy spectra of neutrons generated by ≈1 MJ plasma focus

The spectra of neutrons outside the plasma focus device PF-1000 with an upper energy limit of ≈1 MJ was measured using a Bonner spheres spectrometer in which the active detector of thermal neutrons was replaced by nine thermoluminescent chips. As an a priori spectrum for the unfolding procedure, the...

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Published inReview of scientific instruments Vol. 81; no. 11; p. 113503
Main Authors Králík, M, Krása, J, Velyhan, A, Scholz, M, Ivanova-Stanik, I M, Bienkowska, B, Miklaszewski, R, Schmidt, H, Řezáč, K, Klír, D, Kravárik, J, Kubeš, P
Format Journal Article
LanguageEnglish
Published United States 01.11.2010
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Summary:The spectra of neutrons outside the plasma focus device PF-1000 with an upper energy limit of ≈1 MJ was measured using a Bonner spheres spectrometer in which the active detector of thermal neutrons was replaced by nine thermoluminescent chips. As an a priori spectrum for the unfolding procedure, the spectrum calculated by means of the Monte Carlo method with a simplified model of the discharge chamber was selected. Differences between unfolded and calculated spectra are discussed with respect to properties of the discharge vessel and the laboratory layout.
ISSN:1089-7623
DOI:10.1063/1.3488372